Cobalt Shoal

Saltwater
Sea area

Cobalt Shoal

Saltwater
Sea area

Sq. miles: 0
Boat Ramps: 0
Access Points: 1
Species: 5

Cobalt Shoal is a significant underwater feature within the tidal waters of the lower Connecticut River, flowing into Long Island Sound. This area is characterized by its shoal structure, which creates dynamic underwater terrain ideal for saltwater fishing. The shoal is part of a system of bars and shallows that influence tidal currents and provide habitat for various marine species. Historically, this section of the river has been important for navigation and the fishing industry, with ongoing maintenance dredging to support these uses.

Connecticut licenses and regulations6 to check before you go

Species & education

Learn what type of fish are at Cobalt Shoal and what's needed to catch them.

Find which waters have the species you want to catch

Black Sea Bass

Centropristis striata

Bluefish

Pomatomus saltatrix

Striped Bass

Morone saxatilis

Summer Flounder

Paralichthys dentatus

Tautog

Tautoga onitis

Fishing spots, boat ramps & amenities

Learn how to get on Cobalt Shoal. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Dart Island State Park Access

Access Point

Know where you can legally fish on Cobalt Shoal

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

Connecticut licenses and regulations

Connecticut Boating Regulations

When using any type of watercraft to access a body of water, it is important to follow all federal, state, and local rules and regulations. These rules and regulations include boat permitting and licensing, invasive species inspections and stamps, life jacket and PFD rules, motor size and horsepower restrictions, noise limitations, restrictions on personal watercraft, and many more. Visit the web link below for the most current rules and regulations for this body of water.

Learn more

Connecticut Coastal & Inland Waters

Connecticut divides its waters into a marine district and an inland district, and the boundary on shared rivers and coves is set at a specific demarcation line, often a bridge or road crossing. A Marine Waters Fishing License covers the marine district, while an inland fishing license covers waters above the line. The demarcation lines are listed by waterbody, so check the table to know which license applies where you plan to fish.

Learn more

Connecticut Federal Waters & Offshore Rules

Beyond 3 nautical miles from shore, NOAA Fisheries and the regional fishery management councils set the rules, and those regulations can differ from or change independently of state rules. Anglers targeting Atlantic highly migratory species such as tuna, billfish, or swordfish in federal waters must have a federal HMS vessel permit issued by NOAA Fisheries. Tournament operators fishing from Connecticut ports are also required to register their events with NOAA.

Learn more

Connecticut Saltwater Fishing License

Anyone 16 or older needs a Marine Waters Fishing License to fish from shore or a boat in Connecticut's marine district, or to land marine fish taken from offshore waters. Connecticut DEEP issues the license, and residents 65 and older can renew annually at no cost. Reciprocity agreements with Maine, Massachusetts, Rhode Island, and New York mean a valid marine license from any of those states is honored in Connecticut waters.

Learn more

Connecticut Saltwater Size & Bag Limits

Size limits, bag limits, and open seasons apply per species and are set by Connecticut DEEP, with some species also subject to federal oversight. Rules can change during the year, so always check the current table before heading out. Striped bass, summer flounder, black sea bass, tautog, and bluefish are among the species with specific size and possession rules.

Learn more

Connecticut Shellfish Closures & Advisories

Recreational shellfishing for oysters, clams, mussels, and other species is managed by the Connecticut Department of Agriculture's Bureau of Aquaculture, and harvesting is only legal in areas classified as Approved or Conditionally Approved-Open. Areas close regularly due to rainfall, water quality, or biotoxin events, so check with your local town shellfish commission hotline before you go. Permit requirements, size limits, and daily limits are detailed in the Connecticut Sea Grant recreational shellfishing guide.

Learn more

Take Cobalt Shoal with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

Use the map without signal
Download the map around Cobalt Shoal to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Cobalt Shoal to find where and when fish are biting for you.

Get the onWater Fish app

Free on iOS and Android